Safety cock or valve.



No. 759,341. PATENTED MAY 10, 1904. D. T. BROWN. SAFETY COCK OR VALVE.

APPLICATION FILED NOV. 12, 1903.

N0 MODEL.

Inventor 5L7. JazzzleZ Z1Bmw/& Witnesses I Attorney UNITED STATESPatented May 10, 1904.

PATENT OEEIcE.

DANIEL T. BROWN, OF PAI/VTUOKET, RI-IODE ISLAND, ASSIGNOR OF TWO- THIRDSTO HOWVARD W. FITZ, OF PAWTUOKET, RI-IODE ISLAND.

SAFETY COCK OR VALVE.

SPECIFICATION forming part of Letters Patent No. 759,341, dated May 10,1904.

Application filed November 12, 1903. Serial No. 180,888. (No model.)

To (all whom it may concern:

Be itknown that I, DANIEL T. BROWN, a citizen of the United States,residing at Pawtucket, in the county of Providence and State 5 of RhodeIsland, have invented certain new and useful Improvements in SafetyCocks or Valves; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art I to which it appertains to make and use the same.

My invention relates to improvements in safety devices for lockingcocks, particularly gas-cocks, whereby when the gas is turned off I thecock will be safely and positively locked, so that the same cannot heaccidentally turned to its opened position.

The object of my invention is to provide a device of this characterwhich will be simple 2 in construction, durable in use, very eflicientfor the purpose intended, and comparatively inexpensive of production.

With this and other objects in view the invention consists of certainnovel features of 5 construction, combination, and arrangement of parts,as will be more fully described, and particularly pointed out in theappended claims.

In the accompanying drawings, Figure 1 is 3 a side elevation of one formof my invention. Fig. 2 is an end elevation of the same. Fig. 3 is ahorizontal section taken on the line 3 3 of Fig. 1, showing how thelocking-lever may be disengaged by means of the ordinary gas- 3 5lighter. Fig. 4c is a section taken on the line 4 4 of Fig. 1. Fig. 5 isa side elevation of another form of my invention. Fig. 6 is an end viewof the gas-fixture shown in Fig. 5. Fig. 7 is a vertical sectional viewthrough the 4 same. Fig. 8 is a detail perspective view of the upper endof the key and the handle, showing said parts separated. Fig. 9 is asectional view through still another modified form of my invention.

Referring more particularly to Figs. 1 to 4 of the drawings, the numeral1 denotes the usual conical plug-valve, rotatably mounted in the usualconical valve-casing 2, which forms a part of a gas-fixture of anydescription. Said casing 2 is segmentally cut away 5 at one end toprovide stop-shoulders 3, with which a stop-pin 4:, carried by saidplug-valve, coacts to limit the rotation of the latter. The plug-valveis formed at one end with a key or handpiece 5, upon which my improvedsafety locking device 6 is mounted. The device 6 comprises alocking-lever 7, pivoted intermediate its ends upon a pin 8 between ears9, formed upon one face of said key 5 adjacent to the plug. The long endor arm 10 of said lever is bent substantially at right angles andprojects through an opening or slot 11, formed in the key 5 a shortdistance from its lower or outer end. Said end 10 is formed with afinger-piece 12 and a strengthening-rib 13. 5 A coil-spring 14:,interposed between the opposing faces of said key and said lever andretained by its engagement with studs or projections 15, is adapted toforce the long end 10 of the lever outwardly and its shortend 16 7inwardly against the valve-casing 2 or the plug-valve 1. Said short end16 rides upon the lower end of the valve-casing 2 when the valve isbeing turned; but as soon as the valve reaches its closed position thespring will force said end 16 into the cut-away portion, so that one ofthe shoulders 3 will prevent its accidental rotation. The plug is thuslocked and cannot turn until the lever is operated to move the end 16out of engagement 30 with the shoulder 3. The operation and advantagesof this form of my invention will be readily understood from theforegoing description, taken in connection with the accompanyingdrawings. By pressing theiin- 5 ger-piece 12'upwardly or inwardlyagainst the tension of the spring 1d the end 16 of the lever isdisengaged to unlock the plug-valve. It will be seen upon reference toFig. 3 that the device may be operated by the usual gas- 9 lighter A.The jaws a of the key-turning socket formed upon said lighting device Aengage the rib 13 on the locking-lever and force the end 10 of thelatter upwardly or inwardly to disengage the end 16 from the shoulder 3.

The form of my invention illustrated in Figs. 5 to 8, inclusive, of thedrawings is particularly adapted for use upon the burners of gas-stovesor burners so located that children may readily reach them. This deviceis provided with a double locking feature, which overcomes all liabilityof the accidental turning of the gas cock or valve. As shown, thevalve-casing is formed with stop-shoulders 21, similar to the shoulders3, and the plugvalve 22 is provided with a stop-pin 23, adapted to limitthe rotary movement of said plugvalve. The plug-valve key 24: is formedupon one side at about its center with apertured ears or lugs 25 and atthe upper or outer end of its opposite side with a substantiallycircular socket 26, formed by a projecting annular rib or flange 27. Theupper portion of said flange is formed with a bayonet-slot 28, the mouthof which is flaring or tapered, as shown at 29, and the key 24 is formedwith a slightlyelongated circular aperture 30, which is substantiallyconcentric with the socket 26. Pivotally mounted upon a pin 31, passingthrough the apertures in said ears 25, is a locking-le- Ver 32, theshort end or arm 33 of which engages the casing and coacts with thestopshoulders 21, similar to the construction previously described.Swiveled, as at 34, in the opposite end or long arm of said lockinglever is a stem 35, which projects through the aperture and has its endformed with a handle 36. The circular portion 37 on the inner end ofsaid handle is adapted to enter the socket or casing 26, and a pin orlug 38, formed integrally on the portion 37 or otherwise attached to thehandle, is adapted to enter said bayonet-slot 28, formed in thesocket-flange 27. A coil-spring 39, surrounding the stem and confinedbetween the key 25 and the end of the lever, is adapted to draw thehandle into the socket 26 and force the locking end 33 inwardly, as willbe readily understood. The upper end of the key 24 is formed with aright-angularlyprojecting guard &O, which extends above the stem 35 andspring 39 to protect and shield the same from dust and dirt. hen theplug-valve is in its closed position and locked and it is desired toopen the valve, the handle 36 is given a slight turn to move the pin 38from the locking portion of the bayonet-slot into line with the mouthportion of the same. The handle is then depressed to swing the leveragainst the tension of the spring 39 and disengage the locking end 33from the stop-shoulder 21 to permit the key and plug to be turned. IVhenthe valve is turned to its closed position and the handle released, thespring will actuate the lever, forc ing its end 33 into lockingengagement with one of the shoulders 21 and drawing the porsible for thecock to be accidentally opened by children playing with or handling it.

In Fig. 9 of the drawings I have illustrated another form of myinvention. The turningplug of this cock or valve is formed in one of itsends with a slot 51, and in said slot is riveted or otherwise fastened,as at 52, one end of aspring-plate 53, which is bent upon itself, as at54, to form a spring-arm 55, and is further bent approximately at rightangles to form a finger-piece 56. It will be seen that the plate 53forms a key or handpiece by means of which the plug may-be turned, andthe upper end 57 of the spring-arm coacts with stop-shoulders 58 on'theplug-casing similar to those in the other forms of my invention. Bypulling the finger-piece outwardly said end 57 may be disengaged fromthe stop-shoulder to release the plug 50.

It is evident that my invention may be applied to turning plug-valves ofany description; but it is particularly adapted for burnervalves ofgas-brackets,chandeliers, gas-stoves, and any kind of gas-fixtures.Instead of using coil-springs, as previously described, plate or ribbonsprings may be substituted, as will be readily understood. Various otherchanges in the form, proportion, and the minor details of constructionmay be resorted to without departing from the principle or sacrificingany of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A safety gas-cock comprising a valvecasing, a plug revoluble therein,a lockinglever carried by the plug, said casing and lever havingcoacting locking devices, aspring to normally retain the locking-leverin locking position, means to operate the locking-lever, and means tolock the lever-operating means.

2. In a cock or valve, the combination of a valve-casing having stops, arotary valve in said casing provided with an apertured key or handpiece,a spring-actuated locking-lever pivotally mounted upon said key andhaving one of its ends coacting with said stops, a handle projectingthrough the aperture in said key and attached to said lever, and meansfor locking said handle to said key to prevent movement of the lever,substantially as described.

3. In a cock or valve, the combination of a valve-casing having stops, arotary valve in said casing provided with a key or handpiece having anapertured socket, a spring-actuated locking-lever pivotally mounted uponsaid key and having one of its ends coacting with said stops, a handleswiveled to said lever and projecting through the apertured socket uponsaid key, and a locking slot-and-pin connection between said handle, andsaid socket, substantially as described.

4;. in a cook or valve, the combination of a tion between said handleand said socket to valve-ca ing having stop-shoulders, a rotary holdsaid lever against movement, substanplug-valve in said casing formedwith a key tially as described. or handpieee having an apertured socketand In testimony whereof I have hereunto set 5 5 apertured ears, alocking-lever pivoted bemy hand in presence of tWo subscribing Wittweensaid ears and having one of its ends nesses.

coacting With said stop-shoulders,a stern swiveled to said lever andprojecting through said DANIEL BRONVN' aperturedsooket, a spring uponsaid stem be- WVitnesses:

IO tween said key and lever, a handle upon said JAMES JOHNSTON,

stem having a pin and bayonet-slot eonnec- EMIL A. PAQUETTE.

